/* SPDX-License-Identifier: GPL-2.0 */ /* * Declarations of X.25 Packet Layer type objects. * * History * nov/17/96 Jonathan Naylor Initial version. * mar/20/00 Daniela Squassoni Disabling/enabling of facilities * negotiation. */ #ifndef _X25_H #define _X25_H #include <linux/x25.h> #include <linux/slab.h> #include <linux/refcount.h> #include <net/sock.h> #define X25_ADDR_LEN … #define X25_MAX_L2_LEN … #define X25_STD_MIN_LEN … #define X25_EXT_MIN_LEN … #define X25_GFI_SEQ_MASK … #define X25_GFI_STDSEQ … #define X25_GFI_EXTSEQ … #define X25_Q_BIT … #define X25_D_BIT … #define X25_STD_M_BIT … #define X25_EXT_M_BIT … #define X25_CALL_REQUEST … #define X25_CALL_ACCEPTED … #define X25_CLEAR_REQUEST … #define X25_CLEAR_CONFIRMATION … #define X25_DATA … #define X25_INTERRUPT … #define X25_INTERRUPT_CONFIRMATION … #define X25_RR … #define X25_RNR … #define X25_REJ … #define X25_RESET_REQUEST … #define X25_RESET_CONFIRMATION … #define X25_REGISTRATION_REQUEST … #define X25_REGISTRATION_CONFIRMATION … #define X25_RESTART_REQUEST … #define X25_RESTART_CONFIRMATION … #define X25_DIAGNOSTIC … #define X25_ILLEGAL … /* Define the various conditions that may exist */ #define X25_COND_ACK_PENDING … #define X25_COND_OWN_RX_BUSY … #define X25_COND_PEER_RX_BUSY … /* Define Link State constants. */ enum { … }; enum { … }; #define X25_DEFAULT_T20 … #define X25_DEFAULT_T21 … #define X25_DEFAULT_T22 … #define X25_DEFAULT_T23 … #define X25_DEFAULT_T2 … #define X25_DEFAULT_WINDOW_SIZE … #define X25_DEFAULT_PACKET_SIZE … #define X25_DEFAULT_THROUGHPUT … #define X25_DEFAULT_REVERSE … #define X25_SMODULUS … #define X25_EMODULUS … /* * X.25 Facilities constants. */ #define X25_FAC_CLASS_MASK … #define X25_FAC_CLASS_A … #define X25_FAC_CLASS_B … #define X25_FAC_CLASS_C … #define X25_FAC_CLASS_D … #define X25_FAC_REVERSE … #define X25_FAC_THROUGHPUT … #define X25_FAC_PACKET_SIZE … #define X25_FAC_WINDOW_SIZE … #define X25_MAX_FAC_LEN … #define X25_MAX_CUD_LEN … #define X25_FAC_CALLING_AE … #define X25_FAC_CALLED_AE … #define X25_MARKER … #define X25_DTE_SERVICES … #define X25_MAX_AE_LEN … #define X25_MAX_DTE_FACIL_LEN … /* Bitset in x25_sock->flags for misc flags */ #define X25_Q_BIT_FLAG … #define X25_INTERRUPT_FLAG … #define X25_ACCPT_APPRV_FLAG … /** * struct x25_route - x25 routing entry * @node - entry in x25_list_lock * @address - Start of address range * @sigdigits - Number of sig digits * @dev - More than one for MLP * @refcnt - reference counter */ struct x25_route { … }; struct x25_neigh { … }; struct x25_sock { … }; struct x25_forward { … }; #define x25_sk(ptr) … /* af_x25.c */ extern int sysctl_x25_restart_request_timeout; extern int sysctl_x25_call_request_timeout; extern int sysctl_x25_reset_request_timeout; extern int sysctl_x25_clear_request_timeout; extern int sysctl_x25_ack_holdback_timeout; extern int sysctl_x25_forward; int x25_parse_address_block(struct sk_buff *skb, struct x25_address *called_addr, struct x25_address *calling_addr); int x25_addr_ntoa(unsigned char *, struct x25_address *, struct x25_address *); int x25_addr_aton(unsigned char *, struct x25_address *, struct x25_address *); struct sock *x25_find_socket(unsigned int, struct x25_neigh *); void x25_destroy_socket_from_timer(struct sock *); int x25_rx_call_request(struct sk_buff *, struct x25_neigh *, unsigned int); void x25_kill_by_neigh(struct x25_neigh *); /* x25_dev.c */ void x25_send_frame(struct sk_buff *, struct x25_neigh *); int x25_lapb_receive_frame(struct sk_buff *, struct net_device *, struct packet_type *, struct net_device *); void x25_establish_link(struct x25_neigh *); void x25_terminate_link(struct x25_neigh *); /* x25_facilities.c */ int x25_parse_facilities(struct sk_buff *, struct x25_facilities *, struct x25_dte_facilities *, unsigned long *); int x25_create_facilities(unsigned char *, struct x25_facilities *, struct x25_dte_facilities *, unsigned long); int x25_negotiate_facilities(struct sk_buff *, struct sock *, struct x25_facilities *, struct x25_dte_facilities *); void x25_limit_facilities(struct x25_facilities *, struct x25_neigh *); /* x25_forward.c */ void x25_clear_forward_by_lci(unsigned int lci); void x25_clear_forward_by_dev(struct net_device *); int x25_forward_data(int, struct x25_neigh *, struct sk_buff *); int x25_forward_call(struct x25_address *, struct x25_neigh *, struct sk_buff *, int); /* x25_in.c */ int x25_process_rx_frame(struct sock *, struct sk_buff *); int x25_backlog_rcv(struct sock *, struct sk_buff *); /* x25_link.c */ void x25_link_control(struct sk_buff *, struct x25_neigh *, unsigned short); void x25_link_device_up(struct net_device *); void x25_link_device_down(struct net_device *); void x25_link_established(struct x25_neigh *); void x25_link_terminated(struct x25_neigh *); void x25_transmit_clear_request(struct x25_neigh *, unsigned int, unsigned char); void x25_transmit_link(struct sk_buff *, struct x25_neigh *); int x25_subscr_ioctl(unsigned int, void __user *); struct x25_neigh *x25_get_neigh(struct net_device *); void x25_link_free(void); /* x25_neigh.c */ static __inline__ void x25_neigh_hold(struct x25_neigh *nb) { … } static __inline__ void x25_neigh_put(struct x25_neigh *nb) { … } /* x25_out.c */ int x25_output(struct sock *, struct sk_buff *); void x25_kick(struct sock *); void x25_enquiry_response(struct sock *); /* x25_route.c */ struct x25_route *x25_get_route(struct x25_address *addr); struct net_device *x25_dev_get(char *); void x25_route_device_down(struct net_device *dev); int x25_route_ioctl(unsigned int, void __user *); void x25_route_free(void); static __inline__ void x25_route_hold(struct x25_route *rt) { … } static __inline__ void x25_route_put(struct x25_route *rt) { … } /* x25_subr.c */ void x25_clear_queues(struct sock *); void x25_frames_acked(struct sock *, unsigned short); void x25_requeue_frames(struct sock *); int x25_validate_nr(struct sock *, unsigned short); void x25_write_internal(struct sock *, int); int x25_decode(struct sock *, struct sk_buff *, int *, int *, int *, int *, int *); void x25_disconnect(struct sock *, int, unsigned char, unsigned char); /* x25_timer.c */ void x25_init_timers(struct sock *sk); void x25_start_heartbeat(struct sock *); void x25_start_t2timer(struct sock *); void x25_start_t21timer(struct sock *); void x25_start_t22timer(struct sock *); void x25_start_t23timer(struct sock *); void x25_stop_heartbeat(struct sock *); void x25_stop_timer(struct sock *); unsigned long x25_display_timer(struct sock *); void x25_check_rbuf(struct sock *); /* sysctl_net_x25.c */ #ifdef CONFIG_SYSCTL int x25_register_sysctl(void); void x25_unregister_sysctl(void); #else static inline int x25_register_sysctl(void) { return 0; }; static inline void x25_unregister_sysctl(void) {}; #endif /* CONFIG_SYSCTL */ struct x25_skb_cb { … }; #define X25_SKB_CB(s) … extern struct hlist_head x25_list; extern rwlock_t x25_list_lock; extern struct list_head x25_route_list; extern rwlock_t x25_route_list_lock; extern struct list_head x25_forward_list; extern rwlock_t x25_forward_list_lock; extern struct list_head x25_neigh_list; extern rwlock_t x25_neigh_list_lock; int x25_proc_init(void); void x25_proc_exit(void); #endif
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